Companies given positive grades by the Better Business Bureau are completely trustworthy, right? Not exactly, according to nonprofit group Truth In Advertising (TINA.org). The watchdog organization discovered that some businesses faced false advertising charges from the Federal Trade Commission, despite having high ratings on the bureau's website.

"The investigation shows that a number of companies are still in good standing with the BBB even after government action and settlements totaling in the hundreds of millions of dollars," TINA.org said in a press release Tuesday. "Several businesses even saw their BBB rating improve following an FTC action in 2016."

Supplement manufacturer NutraClick also reached a $350,000 settlement with the FTC last year. The company "did not clearly disclose that people who ordered sample products would be enrolled in a membership program and be billed from $29.99 to $79.99 every month," the FTC said in September. NutraClick currently has an "A" rating, even though 70,000 consumer complaints were made against it.

The Better Business Bureau claims that it's not a "consumer watchdog," but a "mediator between aggrieved consumers and companies," TINA.org said. However, the Virginia-based group claims that people are 83 percent more likely to choose companies that have its seal of accreditation.